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【单选题】
The reason why 1994 was exceptional is that ______.A.
is saw an unusually large number of tourists to the US
B.
it witnessed a drop in the number of tourists to the US
C.
tourism was hardly affected by the weakening of the US dollar that year
D.
Tourists came to the US for sightseeing rather than for bargains year
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【简答题】设有一个 xs 表,该表有一个名为 jl 的字段,若要将该字段删除,可使用命令 Alter Table xs 。
【单选题】【D5】 STEVE: FRANCESCA, WHAT' S YOUR FAVOURITE PIECE OF MUSIC, WOULD YOU SAY ? FRANCESCA: I THINK IT' S 'PIE JESU' BY ANDREW LLOYD-WEBBER. STEVE: REALLY? FRANCESCA: 【D5】______ STEVE:WHEN DID YOU FIRST ...
A.
UR N...ABOUT 1953. I THINK,WHEN I WAS EIGHTEE N.
B.
WHAT ABOUT YOU?
C.
YEAH, I REALLY LIKE THAT.
D.
ACTUALLY, I DON'T LIKE IT THAT MUC H.
【单选题】有一学生表文件，且通过表设计器已经为该表建立了若干普通索引。其中一个索引的索引表达式为“姓名”字段，索引名为XM。现假设学生表已经打开，且处于当前工作区中，那么可以将上述索引设置为当前索引的命令是( )。
A.
SET INDEX TO 姓名
B.
SET INDEX TO XM
C.
SET ORDER TO 姓名
D.
SET ORDER TO XM
【简答题】设有一个表CJDA,该表有一个字段名为BY的字段。如果要将字段删除,可以使用命令ALTER TABLE cjda_____________。
【单选题】某大学分配到的CIDR地址块是165.52.0./22,则该地址块的直接广播地址是( )。
A.
255.255.255.255
B.
165.52.0.255
C.
165.52.0.127
D.
165.52.3.255
【单选题】【D7】 STEVE: FRANCESCA, WHAT' S YOUR FAVOURITE PIECE OF MUSIC, WOULD YOU SAY ? FRANCESCA: I THINK IT' S 'PIE JESU' BY ANDREW LLOYD-WEBBER. STEVE: REALLY? FRANCESCA: 【D5】______ STEVE:WHEN DID YOU FIRST ...
A.
UR N...ABOUT 1953. I THINK,WHEN I WAS EIGHTEE N.
B.
WHAT ABOUT YOU?
C.
YEAH, I REALLY LIKE THAT.
D.
ACTUALLY, I DON'T LIKE IT THAT MUC H.
【简答题】构件自重均不计,则二力杆是 。
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